JDK 6 Update 6 Performance Release is here!

I'm please to announce the release of JDK 6 Update 6 Performance Release on SPARC platforms. This is the latest of our performance releases and is the culmination of our optimization efforts over the last year. With this JDK Sun achieved many world records on SPECjappserver2004, SPECweb2005, SPECjbb2005, and the first ever SPECjvm2008 submission. Please try it for yourself, download it at http://java.sun.com/performance.

Where are the x64 bits? We believe in reliable performance, not just top line performance on targeted workloads. To achieve this we run a lot of tests, and our testing back end is often much longer than the development cycle for any given release. Long story short we found an issue that needed another build, so the x64 binaries will be delivered at a slight delay. Since the performance of an unreliable JDK is zero, we thought you'd understand. I'll update everyone once the x64 binaries are posted.

Finally, I'd like to thank the Apache Harmony project for their JDK optimizations efforts. No, you're not seeing things, I'm thanking Apache Harmony. More details to come in my next blog posting.




Comments:

hi,

what kind of optimizations are in the perf. releases? I found no information regarding technical differences. I have heard rumors about attempts to implement stack allocation on top of the escape analysis efforts...

Posted by mbien on July 07, 2008 at 07:26 AM EDT #

The information for the -p releases is really scarce. Why don't you explain in some nice article/blog what it's all about? Why are there just a few OS/CPUs supported? Will it get back into the OpenJDK hotspot? What optimizations have been implemented?

And something else that could easily be improved: The download of the -p releases is really nasty due to the survey. Could you please put a version (CPU/OS) information somewhere \*before\* the survey?

Posted by Stefan on July 07, 2008 at 07:49 AM EDT #

Thanks for the feedback. I agree, the information about the performance releases is quite scarce, and I'll try to resolve it soon. I'll post a blog entry in the next day or two with details on optimizations, etc. All performance optimizations in the performance releases will go back into the main JDK 6 update releases and OpenJDK. In fact, the latest builds of OpenJDK have the HotSpot JVM improvements included in JDK 6 Update 6 Performance.

Posted by dagastine on July 07, 2008 at 08:23 AM EDT #

Hi David! Not sure if you remember me, I was an intern at Sun in MDE back in 2002-2004. Nice to see a familiar name!

Posted by Joe Attardi on July 08, 2008 at 03:40 AM EDT #

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